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Direct contact assay using monolayer culture of L929 cell line. (A) The control sample is a confluent layer of L929 fibroblast cells. Cells are mostly spindle shaped which is considered normal morphology. (B) The control-uncoated band sample (red arrow), when in contact with the L929 confluent layer, did not change the morphology of the cells. (C) The L929 cells in contact with the coated band (red arrow) also showed the normal morphology of cells similar to the controls.
